Bromine is converted to bromate ion. The oxidation number of bromine changes to____________.

0

+ 1

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0

+ 3

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0

+ 5

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0

+ 7

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Solution

The correct option is C $0$ to $+ 5$
$B r_{2} \to B r O_{3}^{-}$
Oxidation Number of bromine in $B r_{2}$ is $0$ .
Oxidation Number of bromine in $B r O_{3}^{-}$ is $+ 5$ .
Hence, it changes from $0$ to $+ 5$ .

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In the conservation $B r_{2} ⟶ B R O_{3}^{-}$ , the oxidation state of bromine changes from

B r_{2} \to B r O_{3}^{-}

C l_{2}

_{4}

+ 7

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